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What is shuffle in spark?

Question Posted / pallavi saxena


What is shuffle in spark?..

Answer / Anshi Gupta

Shuffle is a process in Apache Spark where data is redistributed among executors for grouping, sorting, or joining. It can be computationally expensive due to the large amount of data movement involved, but Spark has optimizations like sort merge phase and shuffle spill to mitigate performance issues.

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